Include properly strtoull(3) as a part of POSIX 2008
Include properly strtoull(3) as a part of POSIX 2008

POSIX 2008 requires C99 and sdb doesn't includes its namespace.
This causes warnings on NetBSD.

radare/sdb,alvarofe/sdb,radare/sdb,Maijin/sdb,pombredanne/sdb,alvarofe/sdb,radare/sdb,pombredanne/sdb,alvarofe/sdb,alvarofe/sdb,alvarofe/sdb,pombredanne/sdb,Maijin/sdb,alvarofe/sdb,alvarofe/sdb,alvarofe/sdb,radare/sdb,pombredanne/sdb,pombredanne/sdb,Maijin/sdb,radare/sdb,radare/sdb,Maijin/sdb,Maijin/sdb,radare/sdb,Maijin/sdb,alvarofe/sdb,pombredanne/sdb,Maijin/sdb,Maijin/sdb,pombredanne/sdb,Maijin/sdb,radare/sdb,pombredanne/sdb,pombredanne/sdb,alvarofe/sdb,radare/sdb,radare/sdb,Maijin/sdb,Maijin/sdb,radare/sdb,alvarofe/sdb,pombredanne/sdb,pombredanne/sdb